B61L 29/222
Using conductor circuits with separate contacts or conductors
Official title: {using conductor circuits with separate contacts or conductors}
B61L29/222 (Using conductor circuits with separate contacts or conductors) appears on 5 US grants and 5 published applications in this corpus.
Search patents in B61L- Granted patents
- 5
- Published applications
- 5
- Assignees
- 3
- Inventors
- 12
- Latest grant
- 1 Jun 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Railway road crossing warning system with sensing system electrically-decoupled from railroad track1 Jun 2021US 11,021,180 B2Siemens Mobility GmbH
- Rail line sensing and safety system17 Jun 2014US 8,752,797 B2Metrom Rail, LLC
- Automated railway monitoring system28 Jan 2003US 6,511,023 B2
- Automated rail way crossing5 Jun 2001US 6,241,197 B1
- Arrangement for detecting an object by means of sound conducted through a solid body and method of using such arrangement30 Nov 1993US 5,265,831 A
- Railway road crossing warning system with sensing system electrically-decoupled from railroad track10 Oct 2019US 2019/0308649 A1Siemens Industry, Inc.
- System for securing of safety of railroad crossing against vehicle entry during warning signaling9 Aug 2018US 2018/0222506 A1
- Rail line sensing and safety system27 Nov 2014US 2014/0346285 A1Metrom Rail, LLC
- Rail line sensing and safety system7 Jun 2012US 2012/0138752 A1Metrom Rail, LLC
- Automated railway monitoring system20 Sep 2001US 2001/0022332 A1
Most cited
By later US patents
- Arrangement for detecting an object by means of sound conducted through a solid body and method of using such arrangement28US 5,265,831 A1993
- Automated railway monitoring system22US 6,511,023 B22003
- Automated rail way crossing18US 6,241,197 B12001
- Rail line sensing and safety system6US 8,752,797 B2Metrom Rail, LLC · 2014
- Railway road crossing warning system with sensing system electrically-decoupled from railroad track1US 11,021,180 B2Siemens Mobility GmbH · 2021